Oligoarticular juvenile arthritis is the most common form of juvenile idiopathic arthritis, representing nearly 50% of cases. It is more common in girls (80% of cases), with onset occurring between ages 2 and 4. It is usually asymmetrical and affects between one and a maximum of four joints, predominantly those of the lower limbs (knee or foot).
Coding note
Use additional code, if desired, to identify associated uveitis